GlobalTraceRoute
eFax Messenger
MIMEconvert
Manila Envelope
tkMOO-light
SPOOFEM Desktop Application
Dialogue
Outlook Messenger
Heebie Chameleon
Portable Mail
Starred
Twittereeze
SightSpeed (OS X)
soulseeX
HTTP Scoop
OnlyGoodCookies
JBuddy Messenger
Eon Netminder
eMerge
SiteTagger
FeedTree Web Proxy
Letterbox
Dev Zero G Uploader Creator for WebNative (Mac)
Mailsenger Lite
Chax
Portable Adium
PowerMail
Oculus
Myster
QuickPopup (OS X)
Mail Beacon (Mac)
Net/Mac
NotifyMail